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What is an isotope?

Isotopes are atoms of an element with different numbers of neutrons. They have the same proton number, but different mass numbers. They have the same chemical properties, due to having the same number of ele...
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What is Plato's Analogy of the Cave and its significance for philosophers?

With Plato’s analogy of the cave I find it is really useful to understand it visually, so I’m going to draw a diagram of the cave as I explain it. The useful thing about this is that when it comes to revisin...
EC
11379 Views

How do I go about answering questions in my interview if I don't know the answer?

If you have got to the interview stage of an Oxbridge application then the Director of Studies or whoever is conducting the interview is obviously interested in you, they know that you are a capable student,...
EC
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Describe and explain how an action potential is generated

This is a common question, that takes a little while to get your head around. Once you've understood the process, it can be simplified down to a cycle of 3 steps for memory: depolarisation , repolarisation a...
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Answered by Diluxshan S. • Biology tutor
4932 Views

Two functions, y1 & y2, are given by y1=x^2+16x+4; y2=2(3x+2). Find analytically the volume of the solid created by revolving the area between the two curves by 2pi radians around the x-axis. N.B. y2>y1 on the interval between the points of intersection.

Setting the two equations equal to one another to find the intersection boundaries:x^2+16x+4=6x+4; x^2+16x+4-6x-4=0; x^2+10x=0;x(x+10)=0; x=0, x=-10. Setting up the volume of revolution (N.B. Due to typing r...
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Answered by Filippos G. • Maths tutor
2519 Views